Organic chemistry CIE A level (High-scoring exam questions with accurate answers)

Organic chemistry CIE A level (High-
scoring exam questions with accurate
answers)
Chemical formula for alkane - ANSWER-Cn H2n+2



Chemical formula for alkene - ANSWER-Cn H2n



What is a molecular formula? - ANSWER-Shows the number of atoms of each element
present in the molecule



What is the structural formula? - ANSWER-It shows how the atoms are joined together
in a molecule



What is the displayed formula? - ANSWER-This shows all the bonds and all the atoms



What is the skeletal formula? - ANSWER-this shows only the carbon skeleton with each
line representing a C-C bond plus any functional groups that are present



What is the empirical formula? - ANSWER-It shows the simplest whole number ratio of
the atoms of each element in a compound.



What is a functional group? - ANSWER-The atom or group of atoms that is responsible
for most of the chemical reactions of a molecule



What is the functional group and prefix/suffix for Alkanes? - ANSWER-C-C

-ANE



What is the functional group and prefix/suffix for Alkenes? - ANSWER-C=C

-ENE

, What is the functional group and prefix/suffix for Alcohols? - ANSWER--OH

-(al)OL



What is the functional group and prefix/suffix for Aldehydes? - ANSWER-O

II

- C -H



-(an)AL



What is the functional group and prefix/suffix for Ketones? - ANSWER-O

II

-C-



-(an)ONE



What is the functional group and prefix/suffix for Carboxylic acids? - ANSWER-O

II

- C -OH



-(an)OIC ACID



What is the functional group and prefix/suffix for Esters? - ANSWER-O

II

- C -O-



-(an)OATE